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13091429 = 131735821
BaseRepresentation
bin110001111100…
…001001100101
3220122010001202
4301330021211
511322411204
61144332245
7216163301
oct61741145
926563052
1013091429
11743186a
124474085
132934a10
141a4ad01
151238e1e
hexc7c265

13091429 has 8 divisors (see below), whose sum is σ = 14182392. Its totient is φ = 12012480.

The previous prime is 13091417. The next prime is 13091431. The reversal of 13091429 is 92419031.

It is a happy number.

13091429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4739329 + 8352100 = 2177^2 + 2890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13091429 - 24 = 13091413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13091329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (1772799).

Almost surely, 213091429 is an apocalyptic number.

It is an amenable number.

13091429 is a deficient number, since it is larger than the sum of its proper divisors (1090963).

13091429 is a wasteful number, since it uses less digits than its factorization.

13091429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 13091429 is about 3618.2079818606. The cubic root of 13091429 is about 235.6834127566.

The spelling of 13091429 in words is "thirteen million, ninety-one thousand, four hundred twenty-nine".

Divisors: 1 13 173 2249 5821 75673 1007033 13091429